It's very good for an idea to be commonplace. The important thing is that a new idea should develop out of what is already there so that it soon becomes an old acquaintance. Old acquaintances aren't by any means always welcome, but at least one can't be mistaken as to who or what they are.

It is interesting to note that everyone has a different take on the world, a different opinion, and given the same inputs have completely different outputs.

Behind their dark glass, the mad own nothing.

Morality is seldom a safe guide for human conduct.

To every separate person a thing is what he thinks it is – in other words, not a thing, but a think.

Helping other people is a drug so dangerous that there is no cure short of total abstention.

I have remained true to my deepest convictions. I mean the courage of those who are born to be defeated, the weaknesses of the strong, and the tragedy of misunderstandings and missed opportunities, which I have done my best to treat as comedy—for otherwise how can we manage to bear it?